【电学】频率特性

该算法简单，拟合准确度高，可实现步距角的等步距细分，能有效地改善低频起动矩频特性。

micro wave all-pictrue frequency spectrum analyzer

intermediate frequency

intensity-frequency curve examination

operation frequency

chart of frequency distribution【统计】

AF amplifier【电子】;audio amplifier【电子】;audio frequency amplifier【电子】

difference in frequency

signal transmission systems with frequency modulation by the variable